I'm not some anti-diesel troll, I have a 1.5yr old diesel SUV in my garage...! But the fanaticism around diesel, mostly based on the "it worked in Europe" argument, is a red herring because EU diesel usage was driven by policy. Policies are different over here, and much less favorable to diesel.

Only diesel SUV on the market are Q7, X5, Touareg, ML, GL, and Cayenne. All of these require 91+ octane. If you are comparing 87 prices to diesel and saying how the diesel makes no sense for these SUVs, then you have no idea what you're talking about.

Even at the required 91 octane, the price of diesel is less or about the same. These SUVs are much more fuel efficient with their diesel powertrains over the comparative petrol engine, therefore your argument makes no sense, yet again... By spending the same, you go much longer on a gallon of diesel versus 91.